相关疑难解决方法(0)

我以为我知道是什么导致了这个错误,但我似乎无法弄清楚我做错了什么.

这是我得到的完整错误消息:

Attempt to set a non-property-list object (
   "<BC_Person: 0x8f3c140>"
) as an NSUserDefaults value for key personDataArray

我有一个Person我认为符合NSCoding协议的类,我在这个类中有这两个方法:

- (void)encodeWithCoder:(NSCoder *)coder {
    [coder encodeObject:self.personsName forKey:@"BCPersonsName"];
    [coder encodeObject:self.personsBills forKey:@"BCPersonsBillsArray"];
}

- (id)initWithCoder:(NSCoder *)coder {
    self = [super init];
    if (self) {
        self.personsName = [coder decodeObjectForKey:@"BCPersonsName"];
        self.personsBills = [coder decodeObjectForKey:@"BCPersonsBillsArray"];
    }
    return self;
}

在应用程序的某个时刻,NSString在BC_PersonClass设置中,我有一个DataSave类,我认为正在处理我的属性编码BC_PersonClass.这是我在DataSave课堂上使用的代码:

- (void)savePersonArrayData:(BC_Person *)personObject
{
   // NSLog(@"name of the person %@", personObject.personsName); …

我正在使用KVC来序列化NSObject并尝试将其保存到NSUserDefaults,这给了我一个Attempt to insert non-property value当我尝试存储我的时候NSDictionary.

以下是相关对象的属性MyClass:

@interface MyClass : NSObject
@property (copy,nonatomic) NSNumber* value1;
@property (copy,nonatomic) NSNumber* value2;
@property (copy,nonatomic) NSString* value3;
@property (copy,nonatomic) NSString* value4;
@property (copy,nonatomic) NSString* value5;
@property (copy,nonatomic) NSString* value6;
@property (copy,nonatomic) NSString* value7;
@property (copy,nonatomic) NSString* value8;
@end

什么时候保存MyClass,它出现在这里:

-(void)saveMyClass
{
  NSArray* keys = [NSArray arrayWithObjects:
                @"value1",
                @"value2",
                @"value3",
                @"value4",
                @"value5",
                @"value6",
                @"value7",
                @"value8",
                nil];
  NSDictionary* dict = [self dictionaryWithValuesForKeys:keys];
  for( id key in [dict …